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Coronary sinus reperfusion catheter

  • US 5,597,377 A
  • Filed: 05/06/1994
  • Issued: 01/28/1997
  • Est. Priority Date: 05/06/1994
  • Status: Expired due to Fees
First Claim
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1. A non-occluding catheter for retroperfusion of tissue having a defined systemic vein, said vein draining blood from said tissue through a venous junction coupling said vein to the greater circulatory system, comprising:

  • a non-occluding infusion tip, such that when retroperfusing said tissue with a retroperfusate flow, said tip is extends within said vein to a depth in a range of about 2 to 4 inches (5.08 to 10.16 cm) from said venous junction and does not occlude said vein, such that said blood continues to flow from said vein;

    a pump having an inlet orifice and an outlet orifice;

    a tube defining a plurality of channels including at least one withdrawal channel, each of which has a first withdrawal end, a withdrawal port, and a second withdrawal end, wherein said first withdrawal end is coupled to said withdrawal port and said second withdrawal end is coupled to said inlet orifice of said pump;

    at least one infusion channel, each of which has a first infusion end, an infusion port located in said infusion tip, and a second infusion end, wherein said first infusion end is coupled to said infusion port and said second infusion end is coupled to said outlet orifice of said pump; and

    a pressure monitoring channel for monitoring pressure at a pressure port at said infusion tip having a first monitoring end, a second monitoring end, and a pressure sensor, wherein said first monitoring end is coupled to said pressure port and said second monitoring end is coupled to said pressure sensor; and

    means for controlling said pump having a flowmeter for measuring a rate of said retroperfusate flow, whereby fluid entering said withdrawal port is discharged at said infusion port at a flow rate in a range of about 5 to 50 mil./min. and at a pressure less than about 15 mm Hg, said tube and tip made from biocompatible, non-thrombogenic material.

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